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2008-04-28[MIPS] Basic SPRAM supportChris Dearman
Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-28[MIPS] Reimplement clear_page/copy_pageThiemo Seufer
Fold the SB-1 specific implementation of clear_page/copy_page in the generic version, and rewrite that one in tlbex style. The immediate benefits: - It converts the compile-time workaround for SB-1 pass 1 prefetches to a more efficient run-time check. - It allows adjustment of loop unfolling, which helps to reduce the number of redundant cdex cache ops. - It fixes some esoteric cornercases (the cache line length calculations can go wrong, and support for 64k pages without prefetch instructions will overflow the addiu immediate). - Somewhat better guesses of "good" prefetch values. Signed-off-by: Thiemo Seufer <ths@networkno.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-28serial: add VR41xx SIU setup for serial consoleYoichi Yuasa
Add VR41xx SIU setup for serial console. Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28pageflags: standardize comment inclusion in asm-offsets.h and fix MIPSChristoph Lameter
Add the ability to pass comments into asm-offsets.h by generating asm output like -># comment line Mips needs this feature to preserve the comments that are in asm-mips/asm-offsets.h right now. Then remove the special handling for mips from Kbuild and convert mips to use the new string to include the comments. Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-18arch: Remove unnecessary inclusions of asm/semaphore.hMatthew Wilcox
None of these files use any of the functionality promised by asm/semaphore.h. It's possible that they rely on it dragging in some unrelated header file, but I can't build all these files, so we'll have fix any build failures as they come up. Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2008-04-17Generic semaphore implementationMatthew Wilcox
Semaphores are no longer performance-critical, so a generic C implementation is better for maintainability, debuggability and extensibility. Thanks to Peter Zijlstra for fixing the lockdep warning. Thanks to Harvey Harrison for pointing out that the unlikely() was unnecessary. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: Ingo Molnar <mingo@elte.hu>
2008-04-17Pb1200/DBAu1200: fix bad IDE resource sizeSergei Shtylyov
The header files for the Pb1200/DBAu1200 boards have wrong definition for the IDE interface's decoded range length -- it should be 512 bytes according to what the IDE driver does. In addition, the IDE platform device claims 1 byte too many for its memory resource -- fix the platform code and the IDE driver in accordance. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-15MIPS Alchemy: Crapectomy after removal of pm_send_all calls.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-15PM: Remove legacy PMPavel Machek
AFAICT pm_send_all is a nop when noone uses pm_register... Hmm.. can we just force CONFIG_PM_LEGACY=n, and see what happens? Or maybe this is better idea? It may break build somewhere, but it should be easy to fix... (it builds here, i386 and x86-64). Signed-off-by: Pavel Machek <pavel@suse.cz> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
2008-04-07[MIPS] Handle aliases in vmalloc correctly.Ralf Baechle
flush_cache_vmap / flush_cache_vunmap were calling flush_cache_all which - having been deprecated - turned into a nop ... Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-04Merge branch 'upstream' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ralf/upstream-linus * 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/upstream-linus: [MIPS] Make KGDB compile on UP [MIPS] Pb1200: Fix header breakage
2008-04-04[MIPS] Make KGDB compile on UPSergei Shtylyov
Building UP kernel with KGDB enabled produces the following errors and warning (fatal due to -Werror in arch/mips/kernel/Makefile): In file included from arch/mips/kernel/gdb-stub.c:142: include/asm/smp.h:25:1: "raw_smp_processor_id" redefined In file included from include/linux/sched.h:69, from arch/mips/kernel/gdb-stub.c:126: include/linux/smp.h:88:1: this is the location of the previous definition In file included from arch/mips/kernel/gdb-stub.c:142: include/asm/smp.h:62: error: redefinition of 'smp_send_reschedule' include/linux/smp.h:102: error: previous definition of 'smp_send_reschedule' was here include/asm/smp.h: In function `smp_send_reschedule': include/asm/smp.h:65: error: dereferencing pointer to incomplete type arch/mips/kernel/gdb-stub.c: At top level: arch/mips/kernel/gdb-stub.c:660: warning: 'kgdb_wait' defined but not used Fix the errors by not directly including <asm/smp.h> (which is already included by <linux/smp.h>) and the warning by enclosing kgdb_wait() in #ifdef CONFIG_SMP. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-01[MIPS] XSS1500: Fix compilationFlorian Fainelli
This patch fixes the compilation of the Au1000 XSS1500 board setup and irqmap code. Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-01[MIPS] Bigsur: make defconfig more useful.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-01[MIPS] Alchemy: work around clock misdetection on early Au1000Sergei Shtylyov
Work around the CPU clock miscalculation on Au1000DA/HA/HB due the sys_cpupll register being write-only, i.e. actually do what the comment before cal_r4off() function advertised for years but the code failed at. This is achieved by just giving user a chance to define the clock explicitly in the board config. via CONFIG_SOC_AU1000_FREQUENCY option, defaulting to 396 MHz if the option is not given... The patch is based on the AMD's big unpublished patch, the issue seems to be an undocumented errata (or feature :-)... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-01[MIPS] Add missing 4KEC TLB refill handlerThomas Bogendoerfer
Early 4KEc were MIPS32r1 and therefore need some love to get a TLB refill handler. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-01[MIPS] BCM1480: Fix PCI/HT IO accessThomas Bogendoerfer
- removed check for enable HT-PCI bridges, because some CFE version init only the needed one and scanning works even with disabled HT links - implemented I/O access behind HT PCI busses - fixed pci_map for IO resource behind PCI bridge Tested with E100 and Tulip driver. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-01[MIPS] Fix the installation condition of MIPS clocksourceYoichi Yuasa
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-01[MIPS] Check for GCC r10k-cache-barrier supportThomas Bogendoerfer
Check whether gcc supports -mr10-cache-barrier=1 and issue a cleaner error message if not. This option is needed to build working SGI IP28 kernels. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-01[MIPS] I8253: Export i2853_lock to modules.Ralf Baechle
This fixes: ERROR: "i8253_lock" [drivers/input/misc/pcspkr.ko] undefined! Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-04-01[MIPS] VPE loader: Check result of memory allocation.Ralf Baechle
And while at it, make it a little cleaner. Issue originally reported by Tiejun Chen (tiejun.chen@windriver.com). Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] Clocksource: Only install r4k counter as clocksource if present.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] Delete leftovers of old pcspeaker support.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] BCM1480: Init pci controller io_map_baseThomas Bogendoerfer
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] Yosemite: Fix a few more section reference bugs.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] Fix loads of section missmatchesRalf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] Export __ucmpdi2 to modules.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] Fix typo in commentThiemo Seufer
We support now other page sizes as well. Signed-off-by: Thiemo Seufer <ths@networkno.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] Use KBUILD_DEFCONFIGAdrian Bunk
With KBUILD_DEFCONFIG we don't have to ship a second copy of ip22_defconfig. Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] Allow 48Hz to be selected if CONFIG_SYS_SUPPORTS_ARBIT_HZ is set.Ralf Baechle
This allows a 48Hz clock to be selected on Malta and other systems. Note this not normally a sensible option as it results in rather high latencies for some kernel stuff. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] Added missing cases for rdhwr emulationChris Dearman
Some of these are architecturally required for R2 processors so lets try to be bit closer to the real thing. This also provides access to the CPU cycle timer, even on multiprocessors. In that aspect its currently bug compatible to what would happen on a R2-based SMP. Signed-off-by: Chris Dearman <chris@mips.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] Alchemy: Fix ids in Alchemy db dma device tableWolfgang Ocker
0 is a valid device id (DSCR_CMD0_UART0_TX), so we can't use it to mark an empty entry in the device table. Use ~0 instead and search for id ~0 when looking for a free entry. Signed-off-by: Wolfgang Ocker <weo@reccoware.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] BCM47XX: Use new SSB SPROM data structureAurelien Jarno
Switch the BCM47XX code to the new SPROM data structure now that the old one has been removed. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] WGT634U: Register MTD as platform device.Aurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] BCM47xx: Add defconfig file.Aurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] PCI: Coding style fixes for pcibios_enable_resources.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] PCI: Port i386 PCI fixes.Ralf Baechle
The MIPS version of pcibios_enalbe_resources did not have the fixes from ed6d14f9760857c745206c978b80352fc09cfd19 yet which under circumstances similar to x86 might result in failures. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] Qemu: finish platform removalAdrian Bunk
Two files were omitted from the recent removal of the qemu platform. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] Wire up the timerfd_*() o32 system callsDmitri Vorobiev
This patch enables the system calls timerfd_create(), timerfd_settime() and timerfd_gettime() for MIPS architecture. Please see the following Bugzilla entry for more details: http://bugzilla.kernel.org/show_bug.cgi?id=10038 This was tested using a Malta 4Kc board in both little-endian and big-endian modes. The unit test program is available from the URL above. Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@gmail.com> [Ralf: Added N64, N32 and O32 bits on 64-bit kernels.] Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] IP28: Add defconfig fileThomas Bogendoerfer
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] SB1: Fix CONFIG_SIBYTE_DMA_PAGEOPS build failure.Thiemo Seufer
Fix type mismatch warnings for 64-bit kernel builds which trigger -Werror. The problem affects only SB-1 kernels with CONFIG_SIBYTE_DMA_PAGEOPS enabled. Signed-off-by: Thiemo Seufer <ths@networkno.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] BCM1480: Remove stray function call resulting in infinite recursionRalf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] Fix buggy invocations of kmap_coherent()Ralf Baechle
kmap_coherent will only work correctly if the page it is called on is not marked dirty. If it's dirty the kernel address of the page should be used instead of a temporary mapping. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] Fix broken rm7000/rm9000 interrupt handlingThomas Koeller
Properly acknowledge RM7K and RM9K interrupts. Before this, interrupts were permanently masked after their first occurrence, making them non-functional. Signed-off-by: Thomas Koeller <thomas.koeller@baslerweb.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] Handle I-cache coherency in flush_cache_range()Ralf Baechle
So far flush_cache_range() did't consider the I-cache largely because it did rarely ever matter to real world code. This was working primarily because normally code and data are don't share the same pages - with the exception of MIPS16 code which uses address constants embedded between the code. The following sequence of events may break the code: o MIPS16 executable being loaded o dynamic linker relocates the address constants embedded into the code: o Uses mprotect(2) to make code pages PROT_READ|PROT_WRITE o Performs the actual relocations by writing to the pages which likely are COW. Because no PROT_EXEC is set I-cache coherence will not be considered. o Uses mprotect(2) to switch code pages back to PROT_READ|PROT_EXEC. This results in a call to flush_cache_range() which also does not consider I-caches. o => executing the page just having been relocated may now result in the I-cache getting refilled with stale data from memory. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-19[MIPS] Use find_task_by_vpid in system callsPavel Emelyanov
There are some places left in mips, that lookup task in initial namespace, while the code doing so gets the pid from the user space and thus must treat it as virtual. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-02-14Introduce path_put()Jan Blunck
* Add path_put() functions for releasing a reference to the dentry and vfsmount of a struct path in the right order * Switch from path_release(nd) to path_put(&nd->path) * Rename dput_path() to path_put_conditional() [akpm@linux-foundation.org: fix cifs] Signed-off-by: Jan Blunck <jblunck@suse.de> Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Cc: <linux-fsdevel@vger.kernel.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Steven French <sfrench@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-14Embed a struct path into struct nameidata instead of nd->{dentry,mnt}Jan Blunck
This is the central patch of a cleanup series. In most cases there is no good reason why someone would want to use a dentry for itself. This series reflects that fact and embeds a struct path into nameidata. Together with the other patches of this series - it enforced the correct order of getting/releasing the reference count on <dentry,vfsmount> pairs - it prepares the VFS for stacking support since it is essential to have a struct path in every place where the stack can be traversed - it reduces the overall code size: without patch series: text data bss dec hex filename 5321639 858418 715768 6895825 6938d1 vmlinux with patch series: text data bss dec hex filename 5320026 858418 715768 6894212 693284 vmlinux This patch: Switch from nd->{dentry,mnt} to nd->path.{dentry,mnt} everywhere. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix cifs] [akpm@linux-foundation.org: fix smack] Signed-off-by: Jan Blunck <jblunck@suse.de> Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-09ide: introduce HAVE_IDESam Ravnborg
To allow flexible configuration of IDE introduce HAVE_IDE. All archs except arm, um and s390 unconditionally select it. For arm the actual configuration determine if IDE is supported. This is a step towards introducing drivers/Kconfig for arm. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Russell King - ARM Linux <linux@arm.linux.org.uk> Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-02-08MIPS: Mark all but i8259 interrupts as no-probe.Ralf Baechle
Use set_irq_noprobe() to mark all MIPS interrupts as non-probe. Override that default for i8259 interrupts. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Acked-and-tested-by: Rob Landley <rob@landley.net> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>